San Salvador El Seco weather in December

In December, San Salvador El Seco sees average daytime highs of 20°C and overnight lows near 6°C, with 11 mm of rain across 2.4 wet days and about 10.9 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 20°C through the month. The sky is clear or mostly clear about 59% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 54 min at the start of December to 10 h 54 min by month's end. Set against the rest of the year, December is San Salvador El Seco's 2nd-clearest and 7th-windiest month. For the whole year in context, see San Salvador El Seco's year-round climate.

Daytime high: 20°; 11th warmest
Overnight low: 6°; 2nd coldest
Rainfall: 11 mm; 2.4 wet days
Daylight: 10 h 54 min; 7:01 AM – 5:52 PM
Cloud cover: 36%; 2nd clearest
Wind: 7 km/h; 7th windiest
Solar energy: 4.92 kWh/m²
Travel score: 7.8; out of 10

San Salvador El Seco is municipal seat of San Salvador el Seco, State of Puebla, Mexico.

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

← November San Salvador El Seco year-round climate January →Best places to visit in December

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 20°C through the month.

A typical December day in San Salvador El Seco reaches about 20°C in the afternoon and slips back to 6°C overnight — a 14°C spread between the day's warmth and the night's chill. On most days the high lands between 17°C and 23°C. Set against its neighbours, December runs on par with November and on par with January.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Avg high (°C)	21	21	21	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	20	19	19	19	19	19
Avg low (°C)	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	6	5	5	5	5	5	5	5	5	5

	Avg high (°C)	Avg low (°C)
1	21	6
2	21	6
3	21	6
4	20	6
5	20	6
6	20	6
7	20	6
8	20	6
9	20	6
10	20	6
11	20	6
12	20	6
13	20	6
14	20	6
15	20	6
16	20	6
17	20	6
18	20	6
19	20	6
20	20	6
21	20	6
22	20	6
23	20	5
24	20	5
25	20	5
26	20	5
27	19	5
28	19	5
29	19	5
30	19	5
31	19	5

San Salvador El Seco weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Daylight (hours)	Travel score
Jan	19° / 5°	15	3.1	11	7.6
Feb	21° / 6°	15	3.1	11.4	8.0
Mar	23° / 8°	39	7.8	11.9	7.6
Apr	24° / 9°	72	12	12.4	6.8
May	23° / 11°	113	16.7	12.9	6.0
Jun	23° / 11°	157	16.7	13.1	5.6
Jul	22° / 10°	106	13.9	13	6.0
Aug	23° / 11°	118	14.8	12.6	5.9
Sep	21° / 11°	142	16.4	12.1	5.3
Oct	21° / 10°	76	10.6	11.6	6.4
Nov	21° / 7°	28	5.3	11.1	7.3
Dec	20° / 6°	11	2.4	10.9	7.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 59% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 16% of December, with mostly cloudy or overcast conditions the remaining 25%. Skies tend to cloud over as the month goes on.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Clearer (%)	78	78	78	78	78	78	79	79	78	78	77	76	76	75	75	74	74	74	73	72	72	72	72	71	71	72	71	71	71	71	72
Cloudier (%)	22	22	22	22	22	22	21	21	22	22	23	24	24	25	25	26	26	26	27	28	28	28	28	29	29	28	29	29	29	29	28

	Clearer (%)	Cloudier (%)
1	78	22
2	78	22
3	78	22
4	78	22
5	78	22
6	78	22
7	79	21
8	79	21
9	78	22
10	78	22
11	77	23
12	76	24
13	76	24
14	75	25
15	75	25
16	74	26
17	74	26
18	74	26
19	73	27
20	72	28
21	72	28
22	72	28
23	72	28
24	71	29
25	71	29
26	72	28
27	71	29
28	71	29
29	71	29
30	71	29
31	72	28

Chance of precipitation in December

Any precipitation

San Salvador El Seco gets around 11 mm of rain over 2.4 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 8% and peaks near 11% on the wettest days.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Rain chance (%)	8	7	7	6	6	6	6	5	5	5	6	6	6	6	6	7	7	7	8	8	9	9	10	10	11	11	11	11	11	11	11

	Rain chance (%)
1	8
2	7
3	7
4	6
5	6
6	6
7	6
8	5
9	5
10	5
11	6
12	6
13	6
14	6
15	6
16	7
17	7
18	7
19	8
20	8
21	9
22	9
23	10
24	10
25	11
26	11
27	11
28	11
29	11
30	11
31	11

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Dry (%)	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100	100

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Wind speed (km/h)	8	8	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	7	8	8	8	8	8	8	8	8	8	8	8	8
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	8	calm
2	8	calm
3	7	calm
4	7	calm
5	7	calm
6	7	calm
7	7	calm
8	7	calm
9	7	calm
10	7	calm
11	7	calm
12	7	calm
13	7	calm
14	7	calm
15	7	calm
16	7	calm
17	7	calm
18	7	calm
19	7	calm
20	8	calm
21	8	calm
22	8	calm
23	8	calm
24	8	calm
25	8	calm
26	8	calm
27	8	calm
28	8	calm
29	8	calm
30	8	calm
31	8	calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 10 h 54 min at the start of December to 10 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:52 AM to 7:08 AM, and sunset from 5:48 PM to 6:00 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Daylight (h)	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.9	10.8	10.8	10.8	10.8	10.8	10.8	10.8	10.8	10.8	10.9	10.9	10.9	10.9	10.9
Sunrise (AM)	6:52	6:53	6:54	6:54	6:55	6:55	6:56	6:57	6:57	6:58	6:58	6:59	6:59	7:00	7:01	7:01	7:02	7:02	7:03	7:03	7:04	7:04	7:05	7:05	7:06	7:06	7:06	7:07	7:07	7:08	7:08
Sunset (PM)	5:48	5:48	5:49	5:49	5:49	5:49	5:49	5:50	5:50	5:50	5:51	5:51	5:51	5:52	5:52	5:52	5:53	5:53	5:54	5:54	5:54	5:55	5:55	5:56	5:56	5:57	5:57	5:58	5:58	5:59	6:00

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	10.9	6:52	5:48
2	10.9	6:53	5:48
3	10.9	6:54	5:49
4	10.9	6:54	5:49
5	10.9	6:55	5:49
6	10.9	6:55	5:49
7	10.9	6:56	5:49
8	10.9	6:57	5:50
9	10.9	6:57	5:50
10	10.9	6:58	5:50
11	10.9	6:58	5:51
12	10.9	6:59	5:51
13	10.9	6:59	5:51
14	10.9	7:00	5:52
15	10.9	7:01	5:52
16	10.9	7:01	5:52
17	10.9	7:02	5:53
18	10.8	7:02	5:53
19	10.8	7:03	5:54
20	10.8	7:03	5:54
21	10.8	7:04	5:54
22	10.8	7:04	5:55
23	10.8	7:05	5:55
24	10.8	7:05	5:56
25	10.8	7:06	5:56
26	10.8	7:06	5:57
27	10.9	7:06	5:57
28	10.9	7:07	5:58
29	10.9	7:07	5:58
30	10.9	7:08	5:59
31	10.9	7:08	6:00

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 4.92 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.92 kWh/m² to a high of 6.91 kWh/m² in April across the year — December's 4.92 kWh/m² sits near the bottom.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
Solar energy (kWh/m²)	5.0	5.0	5.0	5.0	5.0	5.0	5.0	4.9	4.9	4.9	4.9	4.9	4.9	4.9	4.9	4.8	4.8	4.8	4.8	4.8	4.8	4.8	4.8	4.8	4.8	4.9	4.9	4.9	4.9	4.9	4.9
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright

	Solar energy (kWh/m²)	Level
1	5.0	Bright
2	5.0	Bright
3	5.0	Bright
4	5.0	Bright
5	5.0	Bright
6	5.0	Bright
7	5.0	Bright
8	4.9	Bright
9	4.9	Bright
10	4.9	Bright
11	4.9	Bright
12	4.9	Bright
13	4.9	Bright
14	4.9	Bright
15	4.9	Bright
16	4.8	Bright
17	4.8	Bright
18	4.8	Bright
19	4.8	Bright
20	4.8	Bright
21	4.8	Bright
22	4.8	Bright
23	4.8	Bright
24	4.8	Bright
25	4.8	Bright
26	4.9	Bright
27	4.9	Bright
28	4.9	Bright
29	4.9	Bright
30	4.9	Bright
31	4.9	Bright

Planning a trip in December

Hazard calendar for San Salvador El Seco

In seasonPeak

None of San Salvador El Seco's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

San Salvador El Seco's rainy season runs April–October, when most of the year's rain falls.

Rainy season

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Is December a good time to visit San Salvador El Seco?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

7.8

Sightseeing

2nd-best month of the year

4.0

Beach & pool

9th-best month of the year

December is one of the better times to visit San Salvador El Seco for general sightseeing.

What to pack for San Salvador El Seco in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, San Salvador El Seco sees daytime highs around 20°C and nights near 6°C. Worth packing: a warm layer and sun protection.

a warm layersun protection

UV index in San Salvador El Seco in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Salvador El Seco peaks around April 11 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	9	12	14	15	10	14	13	14	13	12	9	8
Level	Very high	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Extreme	Very high	Very high

	UV index (midday)	Level
Jan	9	Very high
Feb	12	Extreme
Mar	14	Extreme
Apr	15	Extreme
May	10	Extreme
Jun	14	Extreme
Jul	13	Extreme
Aug	14	Extreme
Sep	13	Extreme
Oct	12	Extreme
Nov	9	Very high
Dec	8	Very high

Air quality in San Salvador El Seco in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in San Salvador El Seco is worst in May — around 69 µg/m³ PM2.5 (unhealthy), about 1.9× the cleanest month (October, 38 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	53	54	56	63	69	48	41	38	39	38	49	59
Level	Poor	Poor	Unhealthy	Unhealthy	Unhealthy	Poor	Poor	Poor	Poor	Poor	Poor	Unhealthy

	PM2.5 (µg/m³)	Level
Jan	53	Poor
Feb	54	Poor
Mar	56	Unhealthy
Apr	63	Unhealthy
May	69	Unhealthy
Jun	48	Poor
Jul	41	Poor
Aug	38	Poor
Sep	39	Poor
Oct	38	Poor
Nov	49	Poor
Dec	59	Unhealthy

Location & terrain

Where is San Salvador El Seco?

San Salvador El Seco sits at 19.1°N, 97.6°W, 2,437 m above sea level, in Mexico. The nearest listed city is Acatzingo, 22 km away.

Topography around San Salvador El Seco

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Salvador El Seco.

Within 3 km, the terrain around San Salvador El Seco has only modest variations in elevation — a maximum elevation change of 244 m around an average of 2,387 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 750 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,927 m.

The land around San Salvador El Seco is covered by cropland (48%) and shrubs (22%) within 3 km, cropland (42%) and grassland (24%) within 16 km, and trees (32%), cropland (24%) and shrubs (20%) within 80 km.

3 km

244 m

cropland 48%

16 km

750 m

cropland 42%

80 km

4,927 m

trees 32%

treesshrubsgrasslandcroplandartificial surfacesbare terrain

← November San Salvador El Seco year-round climate January →Best places to visit in December

December weather nearby: Acatzingo 22 km · Palmarito Tochapan 26 km · Ciudad Serdán 26 km · Los Reyes de Juárez 27 km · Tecamachalco 29 km · Acajete 33 km · Tepeaca 33 km · Tepatlaxco de Hidalgo 35 km

Mexico travel facts

Travel advisory: Level 2; Exercise Increased Caution
Power plugs: Type A / B; 120 / 127 V · 60 Hz
Prices: ≈ 54% of US; price level, 2025
GDP per capita: $13,889; 2025
Happiness: 7.0 / 10; World Happiness, 2025
Safe drinking water: 43%; of population, 2024
Homicide rate: 24.9; per 100k, 2023
Road deaths: 12.8; per 100k/yr, 2019
Income group: Upper middle; World Bank
English: Very low; EF EPI 440
Religion

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for San Salvador El Seco (19.1333°, -97.6417°, elevation 2,437 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).

	Avg high (°C)	Avg low (°C)
1	21	6
2	21	6
3	21	6
4	20	6
5	20	6
6	20	6
7	20	6
8	20	6
9	20	6
10	20	6
11	20	6
12	20	6
13	20	6
14	20	6
15	20	6
16	20	6
17	20	6
18	20	6
19	20	6
20	20	6
21	20	6
22	20	6
23	20	5
24	20	5
25	20	5
26	20	5
27	19	5
28	19	5
29	19	5
30	19	5
31	19	5

	Clearer (%)	Cloudier (%)
1	78	22
2	78	22
3	78	22
4	78	22
5	78	22
6	78	22
7	79	21
8	79	21
9	78	22
10	78	22
11	77	23
12	76	24
13	76	24
14	75	25
15	75	25
16	74	26
17	74	26
18	74	26
19	73	27
20	72	28
21	72	28
22	72	28
23	72	28
24	71	29
25	71	29
26	72	28
27	71	29
28	71	29
29	71	29
30	71	29
31	72	28

	Rain chance (%)
1	8
2	7
3	7
4	6
5	6
6	6
7	6
8	5
9	5
10	5
11	6
12	6
13	6
14	6
15	6
16	7
17	7
18	7
19	8
20	8
21	9
22	9
23	10
24	10
25	11
26	11
27	11
28	11
29	11
30	11
31	11

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	21	6
2	21	6
3	21	6
4	20	6
5	20	6
6	20	6
7	20	6
8	20	6
9	20	6
10	20	6
11	20	6
12	20	6
13	20	6
14	20	6
15	20	6
16	20	6
17	20	6
18	20	6
19	20	6
20	20	6
21	20	6
22	20	6
23	20	5
24	20	5
25	20	5
26	20	5
27	19	5
28	19	5
29	19	5
30	19	5
31	19	5

	Clearer (%)	Cloudier (%)
1	78	22
2	78	22
3	78	22
4	78	22
5	78	22
6	78	22
7	79	21
8	79	21
9	78	22
10	78	22
11	77	23
12	76	24
13	76	24
14	75	25
15	75	25
16	74	26
17	74	26
18	74	26
19	73	27
20	72	28
21	72	28
22	72	28
23	72	28
24	71	29
25	71	29
26	72	28
27	71	29
28	71	29
29	71	29
30	71	29
31	72	28

	Rain chance (%)
1	8
2	7
3	7
4	6
5	6
6	6
7	6
8	5
9	5
10	5
11	6
12	6
13	6
14	6
15	6
16	7
17	7
18	7
19	8
20	8
21	9
22	9
23	10
24	10
25	11
26	11
27	11
28	11
29	11
30	11
31	11

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100

	Avg high (°C)	Avg low (°C)
1	21	6
2	21	6
3	21	6
4	20	6
5	20	6
6	20	6
7	20	6
8	20	6
9	20	6
10	20	6
11	20	6
12	20	6
13	20	6
14	20	6
15	20	6
16	20	6
17	20	6
18	20	6
19	20	6
20	20	6
21	20	6
22	20	6
23	20	5
24	20	5
25	20	5
26	20	5
27	19	5
28	19	5
29	19	5
30	19	5
31	19	5

	Clearer (%)	Cloudier (%)
1	78	22
2	78	22
3	78	22
4	78	22
5	78	22
6	78	22
7	79	21
8	79	21
9	78	22
10	78	22
11	77	23
12	76	24
13	76	24
14	75	25
15	75	25
16	74	26
17	74	26
18	74	26
19	73	27
20	72	28
21	72	28
22	72	28
23	72	28
24	71	29
25	71	29
26	72	28
27	71	29
28	71	29
29	71	29
30	71	29
31	72	28

	Rain chance (%)
1	8
2	7
3	7
4	6
5	6
6	6
7	6
8	5
9	5
10	5
11	6
12	6
13	6
14	6
15	6
16	7
17	7
18	7
19	8
20	8
21	9
22	9
23	10
24	10
25	11
26	11
27	11
28	11
29	11
30	11
31	11

	Dry (%)
1	100
2	100
3	100
4	100
5	100
6	100
7	100
8	100
9	100
10	100
11	100
12	100
13	100
14	100
15	100
16	100
17	100
18	100
19	100
20	100
21	100
22	100
23	100
24	100
25	100
26	100
27	100
28	100
29	100
30	100
31	100